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Interpolant for nodal data to selected locations

`pdeInterpolant`

and `[p,e,t]`

representation of `FEMesh`

data are not recommended. Use `interpolateSolution`

and `evaluateGradient`

to interpolate a PDE solution and its gradient to
arbitrary points without switching to a `[p,e,t]`

representation.

An interpolant allows you to evaluate a PDE solution at any point within the geometry.

Partial Differential Equation Toolbox™ solvers return solution values at the nodes, meaning the mesh points. To
evaluate an interpolated solution at other points within the geometry, create a `pdeInterpolant`

object, and then call the
`evaluate`

function.

`evaluate` | Interpolate data to selected locations |